Research has identified familial clustering in primary hyperparathyroidism, with first-degree relatives at a higher risk than control patients.
First-degree relatives of patients with primary hyperparathyroidism are at greater risk of having the condition themselves.
Prior studies have suggested a link between primary hyperparathyroidism and an elevated risk for malignancy, with a pooled prevalence of 20% for any type of cancer among this population.
A link to cancer risk among parents, siblings, and children is less certain.
Author's summary: Familial clustering found in primary hyperparathyroidism.